I have a pekin duckling a little over a week old. He just started experiencing a leg issue. His left leg is bothering him because he rarely uses it now and hops on the other leg. He may use it if he gets hungry and/or thirsty enough to get to the food and water. I tried placing him in a lukewarm bath to relax his muscles and I've just bought some vitamins so that he can get the niacin he needs. Just this morning he started squealing and was stationary as though he didn't recognize his surroundings. He hasn't drank or ate in the past few hours. What should I do? This is my first time owning a duck and he is the sweetest thing. I couldn't see myself without him.